Hydrocarbon-burner.



T. EDISON.

HYDROCARBON BURNER.

APPLICATION FILED NOV. 19. m5.

1 1 88,742. I PatenrodJ une 27, 1916.

BYW QJM/ UNITED STATES PATENT OFFICE.

THOMAS EDISON, OF WINDSOR, ONTARIO, CANADA, ASSIGNOR TO THE DETROIT VAPOR STOVE COMPANY, 013 DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

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Specification of Letters Patent.

Patented June 27, 1916.

Application filed November 19, 1915. Serial No. 62,296.

5 ince of Ontario, Canada, have invented a certain new and useful Improvement in Hydrocarbon-Burners, and declare the following to be. a full, clear, and exact description of the same, such as will enpertains to make and use the same, reference being had to the accompanying drawings, which form a .part of this specification.

This invention relates to hydrocarbon burners and comprises a ring-like-cap which removably sets upon the top of the burner to both centralize the heat and flame and aid the action of the burner by keeping away objectionable air currents. In the drawings, Figure 1, is a side view of'the burner partly in section showing a cross section of the ring-like cap. Fig. 2, is a bottom view of the cap showing the inside construction' The burner here shown is one calculated to burn hydrocarbon, such askerosene or gasolene. It comprises four annular shells provided with horizontal slots through which the air enters the two annular chambers a and b and mixes withthe vaporizing hydrocarbon to form a combustible mixture. The hydrocarbon is carried in' the troughs d and e and is vaporized by the heat communicated to these troughs from the burner. This much of the construction is old.

The outer annular slotted shell 7 is provided with an outwardly-extending flange 9 which turns first outward and then down:

A thin metal band it extends from J J flange to the bottom of the burner and .o held inspaced relation. from the outer slotted annular shell 7 by means of the spacers or wings z which extend outwardly from being part of an shell; I

These wings or-spacers serve to keep the (inset metal band hpproperly spaced and forms a guard for the burner to prevent the casting which forms able others skilled in the art to which it the outside annular slotted shell -f,-

sudden entry of the air into the mixing' My invention comprises the mounting of a cap in the form of a ring arched in crosssection over the outside edge of the burner. This ring is designated j and comprises a casting which forms the ring, shaped on an arc in cross-section, and provided with integral feet is which are cut away at the bottom to fit over the flange .g of the outer annular shell f. It will be noted that these feet is are of the proper length and dimensions to hold the bottom 'of' the cap in spaced relation with the main body of the burner. This gives an air space annular in its entirety, which allows the entry of the air to the top of the burner to support combustion.

It will be noted that the top of the cap j extends partially, (except for the recess for lighting the fuel mixture in the outer chamber 6) and almost entirely, over the upper end of the mixing chamber 6 whose upper end may be'said to be the zone of combustion. This cap, therefore, tends to deflect the flame and heat issuing from the outer end of the chamber 7) toward the inner annular chamber a, and thereby concentrates the heat and flame toward the center of the burner where it can be more efliciently utilized in. cooking and none of the heat is dis sipated at the side of the vessel used in cooking. This cap also acts as a protecting hood to keep away objectionable drafts which would tend to blow out or disturb the flame from the burner. Hydrocarbon burners of this character are very susceptible to drafts, andv inasmuch as the mixture, especially heavy hydrocarbon, prepared for combustion is not as inflammable as the ordinary coal gas, it is necessary that the burner be protected as much as possible to avoid these objectionable drafts. Inasmuch": as the feet 7:: merely set upon the flange g, the cap may be removed whenever desired, as when a more diffused flame is Wanted, to make repairs, or for cleaning.

It will, of course, be understood that this burner sets under a grid. (not shown; which holds the cooking utensils in the customary ..vided withopenings through the sides and forming one or more mixing chambers and flange to removably hold the cap in lace. the outer shell of which is provided with a and spaced at its bottom from the body flange, means for supplying vaporized oil of the'burner to form an annular air space, 10 to the same, and a ring-like cap, said cap substantially as described.

5 being provided with feet on its inside whose In testimony whereof I sign this specifilower portions are cut away to fit over the cation. top of the outer annular shell and the said THOMAS EDISON. 

